无线传感器网络综述以及各网络结构特点和行业发展，给各位刚入门的朋友做为参考-Review of wireless sensor networks and network structural characteristics and the development of the industry, to the friends of you just getting started as a reference

本文讨论的是基于Unet框架，Relay引起的结构变化。在UNet框架下，Relay主要引起三个大模块的变化：网元、覆盖、容量仿真。另外，Relay对于工程框架也有少量影响，但仅限于添加新的图标等-This discussion is based on Unet framework, Relay induced structural changes. In UNet framework, Relay module mainly caused by three big changes: NE, c